|From:||St Johnstone Interchange (NO086253)|
|To:||Bertha Park (NO081265)|
The B9993 is the number which appears to have been assigned to some or all of the new roads being built around Bertha Park and Inveralmond to the north west of Perth. This makes it the highest numbered B road in the UK, and it is likely to stay as such for a long time as the next highest number in use is the B9178. The route is the first part of the Springfield Link Road designed to open up the Bertha Park area as a vast new development site, and also help to ease traffic around the city.
The number is currently only known from a new sign at the new roundabout at the western end of the Inveralmond Industrial Estate, which signs the B9993 as heading over the bridge to Bertha Park. In the short term, this road is likely to be a dead-end, although there are longer term plans to link it up with a new Tay Crossing and Scone on the A94.
The first part of this route, connecting the two roundabouts and crossing over the new Almond Bridge, opened on 26/6/18. This meant that it was a section of classified road completely disconnected from the rest of the classified network. At the time of opening, the road from the new Ruthvenfield Road roundabout south east to the new A85 junction was still under construction.